如何在Spring boot应用程序中用Java为Redis Cache创建hardCode密钥？

Question

我正在尝试使用单个redis缓存来存储两个GET服务的响应-一个是POST，一个是GET。对于GET服务，没有请求参数可以用来在Redis中存储Webservice的响应，当我尝试用硬编码的Key存储它时，它给出了下面的错误。

null key returned for cache operation (maybe you are using named params on classes without debug info?) Builder[public java.util.Map com.getResponse() throws com.adapter.framework.assetserviceadaptor.exception.ServiceExceptions] caches=[redis-cache] | key='#AssetCache' | keyGenerator='' | cacheManager='' | cacheResolver='' | condition='' | unless='' | sync='false'

这就是我尝试存储GET服务响应的方式

@Cacheable(value="redis-cache",key ="#AssetCache")
public Map<String, AssetDetailBO> getAssetsResponse() throws COAssetServiceExceptions {
    try {
        log.info("---- CO_STAGE=[ Caching Service ] ---- ");
        return mergingBrokerageAndMutulFund(assetServiceImpl.getAssetResponse());
    } catch (ServiceExceptions e) {
        log.info("---- CO_STAGE=[ Exception while Calling Assets Adapter For COT ] ---- " 
        + e.getErrorMessage());
        throw e;
    }
}

这就是我存储POST服务响应的方式，它工作得很好。

@Cacheable(value="redis-cache",key ="#customerId")
public CustomerDTO retriveCustomerdetails( String customerId, String modelId, 
  String requestId) throws COException {
CustomerInfo csDTO;
try {
    csDTO = csDTOAdapterImpl.
    getCustomerDetails(customerId);
} catch (Exception e) {
    e.printStackTrace();
}
return csDTO;
}

Answer 1

您可以使用不带值的@Cacheable和其他属性，如@Cacheable("all-students")

示例：

@GetMapping("/student/{id}")
@Cacheable(value = "post-single", key = "#id")
public Student findStudentById(@PathVariable String id) {
    System.out.println("Searching by ID  : " + id);
    return studentService.getStudentByID(id);
}

@GetMapping("/students")
@Cacheable("all-students")
public List<Student> getAllStudents() {

    List<Student> _ = new ArrayList<>();
    _.add(studentService.getStudentByID("1"));
    return _;
}

Answer 2

设置不带#的常量关键点，如下所示：

@Cacheable(value="redis-cache",key ="'AssetCache'")
public Map<String, AssetDetailBO> getAssetsResponse() throws COAssetServiceExceptions {
    try {
        log.info("---- CO_STAGE=[ Caching Service ] ---- ");
        return mergingBrokerageAndMutulFund(assetServiceImpl.getAssetResponse());
    } catch (ServiceExceptions e) {
        log.info("---- CO_STAGE=[ Exception while Calling Assets Adapter For COT ] ---- " 
        + e.getErrorMessage());
        throw e;
    }
}